Dow Global Technolgoies LLC

Anthony J Castelluccio

Pradeep Jain

Roger L Kuhlman

Angela N Taha

Mehmet Demirors

Brandon Fails

Phillip Dene Hustad

Rajen M Patel

Kim Louis Walton

Gary Robert Marchand

Sean W Ewart

Seema V Karande

Alec Y Wang

Jeffrey A Sims

David W Fuchs

Lindsey A Clark

Larry S Green

Chris E Blaschke

Jeffrey J Dean

Mark Grant Spencer

Jian Jim Wang

Mridula Babli Kapur

Thomas W Karjala

Douglas S Ginger

Curvel Hypolite

Frederik E Gemoets

Ludovicus J C Sluijts

James B Crim

Jian Wang

Stacey Hyde

Jacob Veldman

Larry Shayne Green

Lindsey Anne Miller

Chris Blaschke

Ludovicus Jc Sluijts

Philip D Hustad

Phillip P Hustad

A process to form a block copolymer comprising two or more regions or segments of differentiated polymer composition or properties, including feeding a first mixture that includes a chain shuttling agent, a solvent, the one or more monomers, and optionally hydrogen into a first reactor or reactor zone, feeding a second mixture that includes at least one olefin polymerization catalyst and at least one cocatalyst into the first reactor or reactor zone, contacting the first mixture and the second mixture under polymerization conditions in the first reactor or reactor zone to form a reaction mixture that is characterized by the formation of polymer chains from the monomers, allowing polymerization to occur in the first reactor or reactor zone and/or a second reactor or reactor zone to form polymer chains that are differentiated from the polymer chains, such that the resultant polymer has two or more chemically or physically distinguishable blocks.

Process for adding a chain shuttling agent

The invention provides a composition comprising a first composition, comprising at least one ethylene-based polymer, and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio I10/I2 that meets the following equation: I10/I2&#x2265;7.0&#x2212;1.2&#xd7;log (I2). The invention also provides a process to form a composition comprising at least two ethylene-based polymers, said process comprising the following: polymerizing ethylene, and optionally at least one comonomer, in solution, in the presence of a catalyst system comprising a metal-ligand complex of Structure I, as described herein, to form a first ethylene-based polymer; and polymerizing ethylene, and optionally at least one comonomer, in the presence of a catalyst system comprising a Ziegler/Natta catalyst, to form a second ethylene-based polymer.

Ethylene-based polymer composition for films with improved toughness

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following:

Processes to control fouling and improve compositions

A process for recycling solvent used in an ethylene-based polymerization comprising: passing a solvent stream which has been used in a first ethylene-based solvent polymerization reactor through an online purification bed to produce a recycle solvent stream, wherein the solvent stream prior to being passed through the online purification bed comprises solvent, ethylene, hydrogen, polymerization by-products and optionally comonomer; and passing the recycle solvent stream from the online purification bed to a second ethylene-based solvent polymerization reactor; wherein the second ethylene-based solvent polymerization reactor exhibits a catalyst efficiency dip of less than or equal to 20% for no longer than a forty-eight hour period following a swap of the online purification bed to a regenerated purification bed which contains an adsorbent having low reactivity to alkenes is provided.

Process for recycling solvent used in an ethylene-based polymerization reaction and system therefor

Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.

The present invention relates to compositions and processes of making and using interpolymers having a controlled molecular weight distribution. Multilayer films and film layers derived from novel ethylene/&#x3b1;-olefin interpolymers are also disclosed.

Interpolymers suitable for multilayer films

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Lake Jackson, TX, United States of America

Anthony J Castelluccio